Features: The Oxygen Transfer Pump System (OTPS) consists of various oxygen transferring times within a proper internally configured Marine Corps Expeditionary Shelter System. Properly configured, the OTPS gives the using unit the ability to safely and effectively maintain all of its closed-circuit diving and military freefall equipment in an oxygen-safe area. The OTPS is designed to be used on or off deployments. The OTPS can be operated in several different mission scenarios ranging from expeditionary to shipboard and in various climates from extreme cold to extreme heat.

Background: The mission of the Marine Corps reconnaissance underwater combat diver and airborne qualified Marine has expanded to include closed-circuit underwater diving and high altitude parachute operations. This expanded operational role has forces the reconnaissance Marines to use oxygen breathing devices, such as the Underwater Breathing Apparatus (see Fact Sheet below) and the military freefall oxygen mask, to complete their missions. The OTPS has been fielded to satisfy the need to properly and safely maintain the equipment needed to perform closed-circuit diving and high altitude jumps in an environment which is oxygen safe.